WO2001094049A1 - Procede et installation pour fabriquer une bande de metal - Google Patents

Procede et installation pour fabriquer une bande de metal Download PDF

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Publication number
WO2001094049A1
WO2001094049A1 PCT/EP2001/005394 EP0105394W WO0194049A1 WO 2001094049 A1 WO2001094049 A1 WO 2001094049A1 EP 0105394 W EP0105394 W EP 0105394W WO 0194049 A1 WO0194049 A1 WO 0194049A1
Authority
WO
WIPO (PCT)
Prior art keywords
metal strip
strip
casting
drive roller
roller stand
Prior art date
Application number
PCT/EP2001/005394
Other languages
German (de)
English (en)
Inventor
Gerald Hohenbichler
Heinrich Pühringer
Gerhard Finstermann
Ernest Fuhrmann
Original Assignee
Voest-Alpine Industrieanlagenbau Gmbh & Co.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3683802&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2001094049(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Voest-Alpine Industrieanlagenbau Gmbh & Co. filed Critical Voest-Alpine Industrieanlagenbau Gmbh & Co.
Priority to MXPA02012006A priority Critical patent/MXPA02012006A/es
Priority to AT01983261T priority patent/ATE294039T1/de
Priority to JP2002501603A priority patent/JP2003534922A/ja
Priority to AU13581/02A priority patent/AU780386B2/en
Priority to KR1020027016535A priority patent/KR100740759B1/ko
Priority to EP01983261A priority patent/EP1289687B1/fr
Priority to DE50106040T priority patent/DE50106040D1/de
Priority to US10/297,649 priority patent/US6907915B2/en
Publication of WO2001094049A1 publication Critical patent/WO2001094049A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0622—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/463—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B41/00—Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curves; Loop lifters
    • B21B41/08—Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curves; Loop lifters without overall change in the general direction of movement of the work

Definitions

  • the invention relates to a method and a plant for producing a metal strip, preferably a steel strip, in particular made of stainless steel and carbon steel, with a casting thickness of 1.0 mm to max. 20 mm, preferably 1.5 mm to max. 12 mm and excellent surface quality using the two-roll casting process and other treatment stages.
  • the production of a metal strip takes place in a two-roll casting plant between two cooled casting rolls rotating in opposite directions, which in the casting direction form a gradually narrowing receiving space for the melt, which is delimited by side plates on the end faces of the casting rolls.
  • Melt is introduced into this casting chamber via a distributor device and strand shells are formed on the cooled lateral surfaces of the casting rolls, which are connected at the narrowest point between the casting rolls to form a strip of a predetermined thickness.
  • the metal strip formed is reduced in thickness in further treatment stages in a rolling device, or fed directly to a reel device and wound into coils.
  • JP-A 63-48350 it is already known to cast metal strips made of permalloy and aluminum with a thickness of up to 1.0 mm by the two-roll casting process, the metal strip in an intermediate store in which the metal strip is tensioned tightly by a dancer roller. or according to other embodiments in a temporary storage, which is formed by a loop pit, which runs freely through the metal strip, to be stored temporarily and then fed to a strip winding device. Due to the short-term intermediate storage, the two-roller casting device is functionally separated from the reel system to such an extent that jerky movements in the metal strip emanating from the strip reel do not affect the area of the casting system and the high-temperature zone of the metal strip and cause damage there.
  • JP-A 63-238963 it is also known to cast a metal strip in a thickness range of 15 to 50 mm in a casting installation, the mold of which is formed by surrounding strips.
  • the metal strip is conveyed by a pair of driving rollers at a speed-controlled manner and is guided through a loop pit in a multi-stand hot rolling mill before it is reduced in thickness.
  • the length of the band slack in the Schiingengrube causes different strip tension ratios when entering the hot rolling mill, which means that maintaining a uniform strip quality is not guaranteed.
  • the strip runs sideways in the roll stand.
  • the object of the invention is therefore to avoid these disadvantages and to propose a method and a system of the type described at the outset, in which the metal strip formed in the casting system passes through the first cooling and microstructuring phase largely free of stress and without repercussions from downstream devices. Furthermore, it is an object of the invention to keep the intrinsic weight load of the metal strip as constant as possible in this phase after the metal strip has been formed and nevertheless to be able to vary the transport speed in downstream devices. Furthermore, an optimization of the production process from the point of view of consistently highest strip quality should be achieved.
  • the picking up and controlled forwarding of the metal strip by means of a first driving roller structure, the brief storage of the metal strip in a strip storage device and the taking up and forwarding of the metal strip by means of a second driving roller structure take place in immediately successive treatment steps.
  • the determination of the belt position by the formation point of the metal belt in the casting gap of the two-roll casting device and the first clamping in the first drive roller stand enables the determination of an optimal corridor, which essentially corresponds to a quarter arch, in which the metal belt is conveyed largely without stress, even when the transport speed of the metal strip in the first drive roll stand is regulated as a function of the casting speed.
  • the arrangement of a first drive roller structure for taking up and regulating the forwarding of the metal strip before storing it for a short time as a freely hanging band loop in a loop pit prevents repercussions from its own weight and loop movement on the delicate first cooling and microstructure formation phase.
  • the position of the metal strip in the region of the deflection from the vertical to the horizontal direction is measured and the strip transport speed in the first drive roller stand and / or the casting speeds in Pouring gap regulated depending on it.
  • a deflection support device which is designed as an arcuate guide frame and is pivotably mounted in the system structure and only extends over a partial distance from the first drive roller frame to the two-roll casting device, the controllability is maintained in a narrow but sufficient range.
  • the winding of the metal strip under tension can advantageously be regulated as a function of the transport speed of the metal strip in the first or in the second drive roller stand, possibly taking the casting speed into account.
  • a reduction in thickness and microstructure adjustment of the metal strip is carried out by rolling deformation in a rolling mill with a minimum degree of reduction of 20% with strip tension after passing through the second drive roller structure, a final strip thickness of 0.5 to 10 mm, preferably of 0 , 7 to 6 mm is reached.
  • the casting thickness and the final strip thickness are coordinated with one another in such a way that the thickness is reduced in one pass.
  • the thickness reduction of the metal strip takes place in the rolling installation with work rolls preheated to at least 10 ° C. above the hall temperature, preferably 20 ° C. above the hall temperature.
  • Favorable initial conditions can be set in the metal strip for the rolling deformation of the respective steel qualities if, after the second drive roller stand and before the thickness reduction in the rolling mill, if any, temperature compensation in the metal strip takes place, or at least the temperature of the strip edges is compared with the prevailing temperature in a temperature setting zone , In general, however, both an increase and a decrease in the strip temperature to the optimum rolling temperature are provided.
  • the metal strip in the temperature setting zone is expediently held under the strip tension by the second drive roller stand.
  • the metal strip between the two-roll casting device and the first drive roller stand has an inerting chamber with or at least prevents the metal strip from oxidizing runs through an antioxidant atmosphere by introducing suitable fluids (gas mixtures or liquid mixtures) or bringing them into direct contact with the hot metal strip.
  • suitable fluids gas mixtures or liquid mixtures
  • the metal strip is cut up in accordance with predetermined coil weights and, if necessary, the strip edges are trimmed.
  • a system for the production of a metal strip, preferably a steel strip, which meets the task at hand, is formed by the following devices:
  • a two-roll casting device with two casting rolls forming a casting gap, the axes of rotation of which lie in a horizontal plane,
  • a first drive roller stand for receiving and regulated forwarding of the cast metal strip
  • a tape storage device preferably in the form of a loop pit, for short-term storage of the metal tape
  • a second drive roller stand for receiving and forwarding the metal strip
  • the first drive roller stand is arranged directly upstream of the belt store and the second drive roll stand is arranged directly behind the belt store.
  • the two drive roller stands are positioned on the belt store as deflection rollers on the input side and on the output side.
  • a corridor formed by a quarter bend is provided, which is formed at least in a partial area by a deflection support device.
  • Favorable operating conditions for the plant, especially in the section between the two-roll casting plant and the first drive roller stand, which is sensitive to the metal strip, result when a rotary drive of the casting rolls and a rotary drive of the first drive roll stand are connected to a control device for regulating the transport speed of the metal strip in the first drive roll stand.
  • a deflection support device for deflecting the cast metal strip from a vertical casting direction into an essentially horizontal transport direction is arranged between the two-roll casting device and the downstream first drive roller stand.
  • the deflecting support device is designed as an arcuate guide frame, which extends from the first drive roller frame over at least part of the way to the two-roll casting device and is preferably pivotably articulated in the system structure.
  • a belt locating device is arranged between the two-roll casting device and the first drive roller stand, which is coupled in terms of control technology to the first drive roll stand, possibly also to the two-roll casting device.
  • the external conditions for the metal strip can thus be kept largely constant in its first cooling and microstructuring phase.
  • a rolling system for reducing the thickness and structural change is arranged on the cast metal strip after the second drive roller stand.
  • the rolling mill is advantageously formed by a single rolling stand, preferably a four-high rolling stand.
  • the work rolls of the rolling plant are assigned heating devices, preferably an induction heating device or gas burner that can be set on the work rolls.
  • a temperature setting device in particular a strip heater for increasing the strip temperature, preferably a strip edge heater.
  • a drive motor of the second drive roller stand is coupled to the drive of the rolling mill by a control device in such a way that the metal strip is held under tension in the temperature setting device and / or in the rolling mill.
  • the metal strip passes through an inerting chamber which prevents or at least inhibits oxidation and is arranged between the two-roll casting device and the first drive roller stand.
  • the belt store between the first drive roller stand and the second drive roller stand is also designed as an inerting chamber.
  • the inerting chambers can also be used as temperature compensation zones at the same time, and have appropriate devices for cooling or heating the inert gas.
  • the rolling mill is followed by a strip cooling line for controlled cooling of the metal strip.
  • a cross-cutting device and possibly a strip trimming device which are arranged upstream of the tape winding device and there are at least before and after the cross-cutting device drive roller stands which hold the rolled strip under tension during the cut.
  • an intermediate vessel for the melt transfer is arranged above the two-roller casting apparatus, and a casting ladle for the provision of the melt is arranged above this.
  • the ladle is supported in a cantilever arm of a ladle turret which is pivotally supported about a vertical axis from a pouring position to a ladle changing position and back.
  • FIG. 1 showing a system in a first embodiment in a schematic longitudinal section through the system
  • FIG. 2 a system in a second embodiment in one shows a schematic longitudinal section through the system
  • FIG. 3 shows a system with an integrated roll stand in a schematic longitudinal section through the system.
  • FIG. 1 shows a system according to the invention for producing a metal strip 1 of a few millimeters in thickness starting from a two-roll casting device 2, which is indicated schematically by the two casting rolls 3, 4.
  • the melt is fed to the two-roll casting device 2 via an intermediate vessel 5, which flows from a ladle 6.
  • the ladle 6 carrying ladle turret 7 is shown, about the vertical axis of which it is rotatably supported. This enables the transport of the ladles 6 from a pouring position above the intermediate vessel 5 to an opposite ladle change position and thus a sequence casting process.
  • the metal strip 1 is formed in the two-roll casting plant 2 along the lateral surfaces of the casting rolls 3, 4 and is conveyed downward by their rotation.
  • the metal strip is deflected in a quarter curve in the horizontal direction, where it is grasped by a first drive roller stand 8 and passed on directly into a strip store 9 designed as a loop pit.
  • the metal strip is gripped by the second drive roller stand 10 and fed to a strip winding device 11.
  • the metal strip 1 is wound into bundles.
  • a band trimming and cross-dividing device 12 upstream of the bundle winding device 11 with upstream and downstream drive roller stands 13, 14 is only shown in FIG. 3.
  • a control device 15 connects a rotary drive of the casting rollers 3 to the rotary drive of the first drive roller stand 8 and enables a largely constant belt guidance between the two-roll casting installation 2 and the first drive roller stand 8.
  • a second control device 16 controls the reel speed and the transport speed in the second drive roller stand 10 depending on the transport speed in first drive roller stand 8 and / or the casting speed.
  • a strip location system 17 is arranged, which determines the current position of the metal strip 1 in this area. This can be done, for example, through optical, thermal, acoustic or mechanical measuring methods are used. In particular, a measuring device must be selected that can withstand a higher thermal load; the belt location system is connected to the control device 15 in terms of control technology.
  • a deflection support device 18 guides the metal strip to the first drive roller stand 8 in a manner that is gentle on the surface.
  • Fig. 3 illustrates a system incorporating a rolling mill for producing a rolled metal strip with an excellent rolling structure and excellent surface quality, comparable to a conventional cold-rolled metal strip.
  • the second drive roller stand 10 is followed by a rolling mill 19 formed by a single four-high stand.
  • the work rolls 20 can be equipped with heating devices, not shown.
  • a temperature setting device 21 is arranged directly upstream of the rolling mill 19 and connects directly to the second drive roller stand 10.
  • the drive motor of the second drive roller stand 10 is coupled to the drive of the rolling mill 19 by a control device 24 in such a way that the metal strip is held in tension in the temperature setting device 21. This ensures optimal temperature control in the roller 19.
  • An inerting chamber 22 is arranged between the two-roll casting plant 2 and the first driving roller stand 8 and a further inerting chamber 23 is arranged between the first driving roller stand 8 and the second driving roller stand 10.
  • the strip store 9 simultaneously bids the second linerization chamber 23. This prevents the reoxidation of the hot metal strip.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Metal Rolling (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)

Abstract

L'invention concerne un procédé et une installation pour fabriquer une bande de métal. Afin que cette bande de métal réalisée par coulée traverse la première phase de refroidissement et de formation structurelle en grande partie sans contraintes ni rétroactions provenant d'installations en aval, ledit procédé comprend les opérations suivantes en combinaison : introduire du métal en fusion dans un dispositif de coulée à deux cylindres et façonner une bande de métal en la coulant dans l'espace séparant les deux cylindres de laminage, dont les axes de rotation sont à l'horizontale (procédé de coulée à deux cylindres), pour obtenir une bande coulée d'une épaisseur de 1,0 à 20 mm, de préférence de 1,5 à 12 mm ; dévier immédiatement la bande de métal coulée sortant librement vers le bas du dispositif de coulée à deux cylindres pour la faire passer de la verticale à une direction de transport pratiquement horizontale ; réceptionner et transférer la bande de métal de manière régulée par l'intermédiaire d'un premier cadre à cabestan à une première vitesse de transport ; stocker temporairement la bande de métal dans un dispositif de stockage ; réceptionner et transférer la bande de métal par l'intermédiaire d'un deuxième cadre à cabestan à une deuxième vitesse de transport ; enrouler en bobines la bande de métal en la tirant.
PCT/EP2001/005394 2000-06-05 2001-05-11 Procede et installation pour fabriquer une bande de metal WO2001094049A1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
MXPA02012006A MXPA02012006A (es) 2000-06-05 2001-05-11 Metodo y planta para la produccion de una tira metalica.
AT01983261T ATE294039T1 (de) 2000-06-05 2001-05-11 Verfahren und anlage zur herstellung eines metallbandes
JP2002501603A JP2003534922A (ja) 2000-06-05 2001-05-11 金属ストリップの製造方法及び装置
AU13581/02A AU780386B2 (en) 2000-06-05 2001-05-11 Method and installation for producing a metal strip
KR1020027016535A KR100740759B1 (ko) 2000-06-05 2001-05-11 금속 스트립 제조 방법 및 설비
EP01983261A EP1289687B1 (fr) 2000-06-05 2001-05-11 Procede et installation pour fabriquer une bande de metal
DE50106040T DE50106040D1 (de) 2000-06-05 2001-05-11 Verfahren und anlage zur herstellung eines metallbandes
US10/297,649 US6907915B2 (en) 2000-06-05 2001-05-11 Method and installation for producing a metal strip

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA982/2000 2000-06-05
AT0098200A AT409351B (de) 2000-06-05 2000-06-05 Verfahren und anlage zur herstellung eines metallbandes

Publications (1)

Publication Number Publication Date
WO2001094049A1 true WO2001094049A1 (fr) 2001-12-13

Family

ID=3683802

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/005394 WO2001094049A1 (fr) 2000-06-05 2001-05-11 Procede et installation pour fabriquer une bande de metal

Country Status (9)

Country Link
US (1) US6907915B2 (fr)
EP (1) EP1289687B1 (fr)
JP (1) JP2003534922A (fr)
KR (1) KR100740759B1 (fr)
AT (1) AT409351B (fr)
AU (1) AU780386B2 (fr)
DE (1) DE50106040D1 (fr)
MX (1) MXPA02012006A (fr)
WO (1) WO2001094049A1 (fr)

Cited By (2)

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WO2006042606A1 (fr) 2004-10-13 2006-04-27 Siemens Vai Metals Technologies Gmbh & Co Procede et dispositif de production continue d'une fine bande metallique
DE102007041263A1 (de) * 2007-08-30 2009-03-05 Thyssenkrupp Nirosta Gmbh Vorrichtung und Verfahren zum Gießen von Bändern aus einer Metallschmelze, insbesondere einer Stahlschmelze

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AU2008100847A4 (en) * 2007-10-12 2008-10-09 Bluescope Steel Limited Method of forming textured casting rolls with diamond engraving
DE102007056192A1 (de) * 2007-11-21 2009-05-28 Sms Demag Ag Verfahren und Vorrichtung zum Herstellen eines Bandes aus Metall
DE102008005116B4 (de) * 2008-01-14 2010-01-28 Salzgitter Flachstahl Gmbh Verfahren und Einrichtung zur Herstellung eines Metallbandes mit über Länge und Breite unterschiedlichen Materialeigenschaften
DE102011003046A1 (de) * 2011-01-24 2012-07-26 ACHENBACH BUSCHHüTTEN GMBH Fertigwalzeinrichtung sowie Verfahren zur Herstellung eines Magnesiumbandes in einer solchen
US20190105720A1 (en) * 2017-10-05 2019-04-11 Honeywell International Inc. System and method for trim loss optimization for metal industries

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006042606A1 (fr) 2004-10-13 2006-04-27 Siemens Vai Metals Technologies Gmbh & Co Procede et dispositif de production continue d'une fine bande metallique
US7963136B2 (en) 2004-10-13 2011-06-21 Siemens Vai Metals Technologies Gmbh & Co Process and apparatus for the continuous production of a thin metal strip
DE102007041263A1 (de) * 2007-08-30 2009-03-05 Thyssenkrupp Nirosta Gmbh Vorrichtung und Verfahren zum Gießen von Bändern aus einer Metallschmelze, insbesondere einer Stahlschmelze

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DE50106040D1 (de) 2005-06-02
AU780386B2 (en) 2005-03-17
US20030173054A1 (en) 2003-09-18
MXPA02012006A (es) 2004-02-26
US6907915B2 (en) 2005-06-21
KR20030036212A (ko) 2003-05-09
EP1289687B1 (fr) 2005-04-27
EP1289687A1 (fr) 2003-03-12
JP2003534922A (ja) 2003-11-25
AU1358102A (en) 2001-12-17
KR100740759B1 (ko) 2007-07-19
ATA9822000A (de) 2001-12-15
AT409351B (de) 2002-07-25

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